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[PATCH v2 1/8] ppc/pnv: Add pca9552 to powernv10 for PCIe hotplug power
From: |
Glenn Miles |
Subject: |
[PATCH v2 1/8] ppc/pnv: Add pca9552 to powernv10 for PCIe hotplug power control |
Date: |
Fri, 10 Nov 2023 13:49:18 -0600 |
The Power Hypervisor code expects to see a pca9552 device connected
to the 3rd PNV I2C engine on port 1 at I2C address 0x63 (or left-
justified address of 0xC6). This is used by hypervisor code to
control PCIe slot power during hotplug events.
Signed-off-by: Glenn Miles <milesg@linux.vnet.ibm.com>
---
Based-on: <20231024181144.4045056-3-milesg@linux.vnet.ibm.com>
[PATCH v3 2/2] misc/pca9552: Let external devices set pca9552 inputs
hw/ppc/Kconfig | 1 +
hw/ppc/pnv.c | 7 +++++++
2 files changed, 8 insertions(+)
diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig
index 56f0475a8e..f77ca773cf 100644
--- a/hw/ppc/Kconfig
+++ b/hw/ppc/Kconfig
@@ -32,6 +32,7 @@ config POWERNV
select XIVE
select FDT_PPC
select PCI_POWERNV
+ select PCA9552
config PPC405
bool
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 9c29727337..7afaf1008f 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -1877,6 +1877,13 @@ static void pnv_chip_power10_realize(DeviceState *dev,
Error **errp)
qdev_get_gpio_in(DEVICE(&chip10->psi),
PSIHB9_IRQ_SBE_I2C));
}
+
+ /*
+ * Add a PCA9552 I2C device for PCIe hotplug control
+ * to engine 2, bus 1, address 0x63
+ */
+ i2c_slave_create_simple(chip10->i2c[2].busses[1], "pca9552", 0x63);
+
}
static uint32_t pnv_chip_power10_xscom_pcba(PnvChip *chip, uint64_t addr)
--
2.31.1
- [PATCH v2 0/8] Add powernv10 I2C devices and tests, Glenn Miles, 2023/11/10
- [PATCH v2 1/8] ppc/pnv: Add pca9552 to powernv10 for PCIe hotplug power control,
Glenn Miles <=
- [PATCH v2 7/8] ppc/pnv: Add a pca9554 I2C device to powernv10, Glenn Miles, 2023/11/10
- [PATCH v2 5/8] ppc/pnv: Use resettable interface to reset child I2C buses, Glenn Miles, 2023/11/10
- [PATCH v2 2/8] ppc/pnv: Wire up pca9552 GPIO pins for PCIe hotplug power control, Glenn Miles, 2023/11/10
- [PATCH v2 3/8] ppc/pnv: PNV I2C engines assigned incorrect XSCOM addresses, Glenn Miles, 2023/11/10
- [PATCH v2 8/8] ppc/pnv: Test pnv i2c master and connected devices, Glenn Miles, 2023/11/10
- [PATCH v2 4/8] ppc/pnv: Fix PNV I2C invalid status after reset, Glenn Miles, 2023/11/10